Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/02—Elements
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
  • C08J5/18—Manufacture of films or sheets
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
  • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
  • A01G9/14—Greenhouses
  • A01G9/1438—Covering materials therefor; Materials for protective coverings used for soil and plants, e.g. films, canopies, tunnels or cloches
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C33/00—Moulds or cores; Details thereof or accessories therefor
  • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
  • B29C33/68—Release sheets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
  • B29C37/0067—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other
  • B29C37/0075—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other using release sheets
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/16—Halogen-containing compounds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
  • C08K5/098—Metal salts of carboxylic acids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
  • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
  • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Definitions

• the present invention relates to nylon film, which is useful as a carrier web in the manufacture of fibrous reinforced resin sheets.
• Fibrous reinforced resin sheets which are also known as reinforced panels (FRP) and methods of manufact­uring them are known.
• Fibrous reinforced resin sheets are generally made from a cross-linkable polymeric resin containing a particulate filler.
• the particulate filler is usually a cut fibre, such as glass fibre.
• the sheets may also contain small concentrations of additives, e.g., a cross-linking agent.
• a typical method of manufacture is described in U.S. Patent 4 362 585 to de Antonis et al which issued 1982 December 7, and in French Patent No. 1 249 734 to Deutsche Akadamie dermaschineen zu Berlin which was published 1960 November 21.
• Carrier webs shown to be useful in this method of manufacture include regen­erated cellulose film, oriented polyester film and oriented nylon film. The top film also may be made from these materials.
• the present inventor speculates that the aforementioned problem of lack of gloss may be caused by static elect­ricity at the interface of the oriented nylon film and the resin sheet. It has been observed that during manufacture of cast nylon films there is less static build-up on films containing a heat stabilizer than on those in which the heat stabilizer is not present.
• Heat stabilizers for use in nylon structures, are known.
• heat stabilizers comprising cupric salts and alkali metal salts, in combination, are used commercially. They are used in nylon fibres which may be subject to heat and/or strong sunlight, e.g., seat belt yarn.
• they have been used in cast nylon films which are intended to be subjected to high temperatures, e.g., in the manufacture of aeroplane wings. It is believed that heretofore there has been no use of oriented nylon films containing heat stabilizers.
• the present invention provides an oriented nylon film containing an additive selected from at least one copper salt, at least one alkali metal halide, at least one alkaline earth metal halide and mixtures thereof.
• the nylon film is nylon 6, nylon 66 or nylon 66/6 film, or a film of a mixture of nylon 6, nylon 66, and/or nylon 66/6. Especially useful is nylon 66 film.
• the film is preferably oriented in the machine direction.
• Preferred copper salts are cupric acetate and cupric iodide, especially the former. It is preferred that the copper salt, alkali metal halide or alkaline earth metal halide be used alone, but they may be used in combination.
• the present invention also provides a method of manufacturing fibrous reinforced resin sheet, wherein the material of such sheet is fed into a carrier web, the improvement comprising the carrier web being an oriented nylon film containing an additive selected from at least one copper salt, at least one alkali metal halide, alkaline earth metal halide and mixtures thereof.
• a top web is fed on top of such material prior to passing the resultant sandwich of carrier web, fibrous reinforced resin material and top web through constricting rollers, wherein the top web is an oriented nylon film.
• the nylon film is made from nylon 6, nylon 66, nylon 66/6 or mixtures thereof, especially nylon 66 film.
• the film is oriented in the machine direction.
• the top web and carrier web may both be the nylon film of the present invention.
• the present invention also provides a method of manufacturing fibrous reinforced resin sheet wherein the material for such sheet is fed onto a carrier web, a top web is fed onto the top of the material and the resulting sandwich of top web, material and carrier web is passed through constricting means for controlling the thickness and shape of the transverse section of the sandwich, the improvement wherein at least one of the top web and carrier web is an oriented nylon film containing an addi­tive selected from at least one copper salt, at least one alkali metal halide, at least one alakline earth metal halide and mixtures thereof.
• the copper salts may be cupric or cuprous salts of an organic or an inorganic acid.
• Preferred organic acid salts are copper salts of acetic, butyric, lauric, palmitic and stearate acids.
• Preferred alkali metal and alkaline earth metal halides are the chlorides, bromides or iodides of sodium, potasium and magnesium.
• the nylon film may be oriented using known methods, e.g. according to the methods shown in Canadian Patent 1 011 520 to I.K. MacGregor which issued 1977 June 7 and U.S. Patent 4 477 407 to Hetherington et al which issued 1984 October 10. Preferred orientation ratios are from 1.5:1 to 6:1.
• a carrier web is continuously fed onto a conveyor, past stations for feeding cross-linkable resin and particulate filler onto the carrier web, through an oven and is then wound up on a wind-up roll.
• the carrier web is a so-called release sheet and may be of regenerated cellulose, oriented polyester or oriented nylon film.
• a top web, also a release sheet, may also be fed on top of the filler and resin prior to entering the oven. Prior to entering the oven, there is means to control the thickness of the resin and filler mixture. Usually this is accom­plished by the use of compacting rollers.
• at least one of the carrier web and top web is an oriented nylon film containing the aforementioned copper and/or halide salts.
• the cross-linkable resin is usually a thermo­setting resin, e.g. a polyester composition containing a cross-linking agent.
• the particulate filler is a fibrous reinforcing material, e.g. cut fibre.
• the usual fibrous reinforcing material is cut glass fibre.
• the sheet formed using the present invention are useful in applications where a glossy surface is desirable.
• the copper salt may be present in the oriented nylon film in concentrations as small as about 10 ppm, based upon the copper concentration. Concentrations from 20 to 150 ppm Cu are particularly effective, especially from at least 50 ppm.
• the halides of the alkali metal or alkaline earth metal may preferably be in concentrations from about 0.05 wt %, especially from about 0.08 to 0.20 wt %.
• the oriented nylon film thickness will depend, in part on the thickness of the sheet.
• the nylon film may be up to about 60 micrometres or greater in thickness.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• Polymers & Plastics (AREA)
• Medicinal Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Environmental Sciences (AREA)
• Soil Sciences (AREA)
• Mechanical Engineering (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Moulding By Coating Moulds (AREA)
• Reinforced Plastic Materials (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=10601260

Family Applications (1)

Country Status (7)

Cited By (1)

Family Cites Families (2)

• 1986
  • 1986-07-17 GB GB868617533A patent/GB8617533D0/en active Pending
• 1987
  • 1987-07-07 AU AU75319/87A patent/AU599114B2/en not_active Ceased
  • 1987-07-14 EP EP87306204A patent/EP0253621B1/fr not_active Expired - Lifetime
  • 1987-07-14 DE DE3788376T patent/DE3788376T2/de not_active Expired - Fee Related
  • 1987-07-14 CA CA000542024A patent/CA1304902C/fr not_active Expired - Lifetime
  • 1987-07-16 KR KR1019870007753A patent/KR950008012B1/ko not_active Expired - Lifetime
  • 1987-07-17 JP JP62177348A patent/JPS63113027A/ja active Pending

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